Accession Number : AD0714301

Title :   3200 Angstrom Phosphor.

Descriptive Note : Progress rept. no. 7, 1 Jan-30 Jun 70,

Corporate Author : WESTINGHOUSE ELECTRIC CORP BALTIMORE MD SYSTEMS DEVELOPMENT DIV

Personal Author(s) : Ogland,Jon W. ; Malarkey,Edward C. ; Natale,Michael R.

Report Date : OCT 1970

Pagination or Media Count : 47

Abstract : The objective of the contract is to conduct a research and development program leading to the production of a cathodoluminescent phosphor which emits whith high efficiency in the spectral region around 3200 A. This phosphor is to be incorporated into very high resolution cathode-ray tubes with fiber optic faceplates for data recording on UV sensitive, dry-process films. The efficiencies and maintenance values of all promising phosphor materials have been determined. Several samples of the barium zinc silicate series showed the highest CL efficiency yet reported for the 3200 A wavelength region. Sr2ZnSi2O7:Pb has been chosen as the final phosphor for the 3200 A tubes by virtue of its efficiency, insensitivity to loading, and resistance to degradation. Other compositions of the X-series were also found to be quite durable, but slightly less efficient. Further progress was realized in reducing the particle size of the 3800 A phosphor, Zn2SiO4:TiO2.

Descriptors :   (*PHOSPHORESCENT MATERIALS, *CATHODE RAY TUBE SCREENS), (*SILICATES, PHOSPHORESCENT MATERIALS), ULTRAVIOLET RADIATION, ZINC COMPOUNDS, CALCIUM COMPOUNDS, BARIUM COMPOUNDS, STRONTIUM COMPOUNDS, LEAD COMPOUNDS, TITANIUM COMPOUNDS, DOPING, FIBER OPTICS

Subject Categories : Electrooptical and Optoelectronic Devices
      Miscellaneous Materials
      Solid State Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE